Cockeyed hammers / Don Gilmore

[Avery Todd]

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Hey guys & gals,

Please delete some of the stuff you're replying to if it isn't pertinent!
This message was 57 MG's where most are 3-7! Thanks.

Avery

At 03:33 PM 12/20/03, you wrote:
>Hi, Don, thanks for your answer. That clear those concepts enough.
>
>But still I suppose that the whole energy transmission of the piano action 
>is responding to this momentum concept very well , mostly I believe 
>because a lot of compression occur within the mechanism (and even on the 
>key bed) and that as  this seem to work like a system that stores energy 
>and give it back when stopped (hence the importance of the hardness of the 
>felts under the front of the key), the direction of these moments are 
>changing the way the hammer is throw.
>
>I can't imagine the piano action during its move like if it was rigid, 
>only on the paper it looks like it, when playing from soft to forte the 
>kinetic energy delivered is certainly not changing linearly, and the 
>momentum of the whole action stack is certainly playing a role in for 
>instance staccato playing. (it is just an opportunity  to reintroduce 
>momentum !)
>
>To make a string vibrate, is not a deformation necessary then an impact 
>occur, I guess that with voicing we look for a match between the rebound 
>of the string and the rebound of the hammer that allow for the best 
>efficiency in bringing the string in its original vibrating mode in the 
>most efficient way .
>
>Coming back at that less stiff support on the hammer pin side does it help 
>the hammer to keep more energy vs. the one that is lost in the pinning at 
>hammer/string contact (decoupling) ?
>
>Sorry for my poor terminology, as often the things us technicians have a 
>feel for because we have meet them in the field, are not easily understood 
>by ourselves with the use of physics (particularly when like me I did not 
>study those theories enough !)
>
>BTW simples reminder like the fact that drilling a lot of holes in a key 
>can't help in stiffening it are of great value indeed. thanks Mr Ellis ;>)
>
>Happy Christmas , and best regards
>
>Isaac OLEG
>

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